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![Stefan Roese](/assets/img/avatar_default.png)
Testing has shown that the current DM implementation of a platform / board specific translation offset, as its needed for the SPL on MVEBU platforms is buggy. The translation offset is confingured too late, after the driver bind functions are run. This may result in incorrect address translations. With the current implementation its not possible to configure the offset earlier, as the DM code has not run at all. This patch now removed the set_/get_translation_offset() calls and moves the translation offset into the GD variable translation_offset. This variable will get used when CONFIG_TRANSLATION_OFFSET is enabled. This option is enabled only for MVEBU on ARM32 platforms, where its currenty needed and configured in the SPL. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Pierre Bourdon <delroth@gmail.com> Cc: Baruch Siach <baruch@tkos.co.il> Cc: Simon Glass <sjg@chromium.org> Cc: Heiko Schocher <hs@denx.de> Cc: Tom Rini <trini@konsulko.com> Tested-by: Pierre Bourdon <delroth@gmail.com> Tested-by: Baruch Siach <baruch@tkos.co.il>
176 lines
4.0 KiB
C
176 lines
4.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Device addresses
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*
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* Copyright (c) 2017 Google, Inc
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*
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* (C) Copyright 2012
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* Pavel Herrmann <morpheus.ibis@gmail.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <fdt_support.h>
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#include <asm/io.h>
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#include <dm/device-internal.h>
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DECLARE_GLOBAL_DATA_PTR;
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fdt_addr_t devfdt_get_addr_index(struct udevice *dev, int index)
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{
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#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
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fdt_addr_t addr;
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if (CONFIG_IS_ENABLED(OF_TRANSLATE)) {
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const fdt32_t *reg;
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int len = 0;
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int na, ns;
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na = fdt_address_cells(gd->fdt_blob,
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dev_of_offset(dev->parent));
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if (na < 1) {
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debug("bad #address-cells\n");
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return FDT_ADDR_T_NONE;
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}
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ns = fdt_size_cells(gd->fdt_blob, dev_of_offset(dev->parent));
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if (ns < 0) {
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debug("bad #size-cells\n");
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return FDT_ADDR_T_NONE;
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}
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reg = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "reg",
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&len);
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if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns)))) {
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debug("Req index out of range\n");
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return FDT_ADDR_T_NONE;
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}
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reg += index * (na + ns);
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if (ns) {
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/*
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* Use the full-fledged translate function for complex
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* bus setups.
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*/
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addr = fdt_translate_address((void *)gd->fdt_blob,
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dev_of_offset(dev), reg);
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} else {
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/* Non translatable if #size-cells == 0 */
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addr = fdt_read_number(reg, na);
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}
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} else {
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/*
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* Use the "simple" translate function for less complex
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* bus setups.
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*/
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addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
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dev_of_offset(dev->parent), dev_of_offset(dev),
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"reg", index, NULL, false);
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if (CONFIG_IS_ENABLED(SIMPLE_BUS) && addr != FDT_ADDR_T_NONE) {
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if (device_get_uclass_id(dev->parent) ==
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UCLASS_SIMPLE_BUS)
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addr = simple_bus_translate(dev->parent, addr);
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}
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}
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#if defined(CONFIG_TRANSLATION_OFFSET)
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/*
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* Some platforms need a special address translation. Those
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* platforms (e.g. mvebu in SPL) can configure a translation
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* offset by setting this value in the GD and enaling this
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* feature via CONFIG_TRANSLATION_OFFSET. This value will
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* get added to all addresses returned by devfdt_get_addr().
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*/
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addr += gd->translation_offset;
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#endif
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return addr;
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#else
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return FDT_ADDR_T_NONE;
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#endif
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}
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fdt_addr_t devfdt_get_addr_size_index(struct udevice *dev, int index,
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fdt_size_t *size)
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{
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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/*
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* Only get the size in this first call. We'll get the addr in the
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* next call to the exisiting dev_get_xxx function which handles
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* all config options.
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*/
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fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, dev_of_offset(dev),
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"reg", index, size, false);
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/*
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* Get the base address via the existing function which handles
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* all Kconfig cases
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*/
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return devfdt_get_addr_index(dev, index);
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#else
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return FDT_ADDR_T_NONE;
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#endif
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}
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fdt_addr_t devfdt_get_addr_name(struct udevice *dev, const char *name)
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{
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#if CONFIG_IS_ENABLED(OF_CONTROL)
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int index;
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index = fdt_stringlist_search(gd->fdt_blob, dev_of_offset(dev),
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"reg-names", name);
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if (index < 0)
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return index;
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return devfdt_get_addr_index(dev, index);
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#else
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return FDT_ADDR_T_NONE;
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#endif
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}
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fdt_addr_t devfdt_get_addr(struct udevice *dev)
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{
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return devfdt_get_addr_index(dev, 0);
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}
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void *devfdt_get_addr_ptr(struct udevice *dev)
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{
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return (void *)(uintptr_t)devfdt_get_addr_index(dev, 0);
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}
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void *devfdt_remap_addr_index(struct udevice *dev, int index)
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{
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fdt_addr_t addr = devfdt_get_addr_index(dev, index);
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if (addr == FDT_ADDR_T_NONE)
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return NULL;
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return map_physmem(addr, 0, MAP_NOCACHE);
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}
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void *devfdt_remap_addr_name(struct udevice *dev, const char *name)
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{
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fdt_addr_t addr = devfdt_get_addr_name(dev, name);
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if (addr == FDT_ADDR_T_NONE)
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return NULL;
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return map_physmem(addr, 0, MAP_NOCACHE);
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}
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void *devfdt_remap_addr(struct udevice *dev)
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{
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return devfdt_remap_addr_index(dev, 0);
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}
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void *devfdt_map_physmem(struct udevice *dev, unsigned long size)
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{
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fdt_addr_t addr = devfdt_get_addr(dev);
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if (addr == FDT_ADDR_T_NONE)
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return NULL;
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return map_physmem(addr, size, MAP_NOCACHE);
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}
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